CN103993955A - Reciprocating heat accumulating type internal combustion engine - Google Patents
Reciprocating heat accumulating type internal combustion engine Download PDFInfo
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- CN103993955A CN103993955A CN201410155227.3A CN201410155227A CN103993955A CN 103993955 A CN103993955 A CN 103993955A CN 201410155227 A CN201410155227 A CN 201410155227A CN 103993955 A CN103993955 A CN 103993955A
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Abstract
A reciprocating heat accumulating type internal combustion engine comprises a compression air cylinder, a heat accumulator, a communicating pipe, a combustion chamber and an expansion air cylinder. The reciprocating heat accumulating type internal combustion engine is structurally characterized in that the heat accumulator is located in a channel of the communicating pipe connecting the compression air cylinder with the expansion air cylinder. According to the basic working principle, when a piston of the compression air cylinder moves downwards from an upper dead center, an inlet valve on the compression air cylinder is opened, air is sucked in from the outside world, when the compression air cylinder compresses the air, the inlet valve is closed, the compressed air flows through the heat accumulator to be heated and enters the combustion chamber, then fuel is injected in and combusted together with the high temperature compressed air, the high temperature gas enters the expansion air cylinder, a piston of the expansion air cylinder moves downwards from the upper dead center, and fuel gas expands and does work. When the piston of the expansion air cylinder moves upwards, an exhaust valve is opened, the fuel gas after doing work comes out from the expansion air cylinder and passes through the combustion chamber and the heat accumulator reversely to heat the heat accumulator and lower own fuel gas temperature, the fuel gas is exhausted from the exhaust valve after flowing out of the heat accumulator, and a power circulation is completed.
Description
Technical field
The present invention relates to motor, is a kind of reciprocal heat accumulating type internal-combustion engine.
Background technique
Motor generally refers to heat engine, be a kind of by fuel or other energy conversions, be the heat energy of engine interior working medium, and be further converted to the power plant of mechanical energy.Internal-combustion engine is a kind of traditional, utilizes motor very widely, and in industry, the industry fields such as communications and transportation have important application.As its name suggests, internal-combustion engine be a kind of fuel in cylinder interior work by combustion, modal is petrol engine and diesel engine.Because fuel combustion is carried out under the restrictive conditions such as short time, intermittent type, cause fuel combustion insufficient, tail gas pollution is serious, off-design efficiency is poor, engine scuffing, and maintenance cost is high, high to fuel mass requirement, many shortcomings such as detonation and noise vibration.Internal-combustion engine is a kind of relatively ripe technology at present, but its development is subject to certain limitation owing to being subject to above-mentioned disadvantages affect.
Common petrol engine and diesel engine are all four stroke engine, and a power cycle is through air inlet, and compression, expands and do work and exhaust Four processes.Both are that petrol engine is spark-ignition engine at maximum difference, and diesel engine is compression ignition engine.Petrol engine is lighter and handier, high specific power and rotating speed advantages of higher, but owing to being Spark ignition type, make the engine compression ratio can not be too high, the possibility that has detonation in compression process, high to the OR Octane Requirements of fuel, and also the efficiency of petrol engine is lower with respect to diesel engine.Diesel engine is compression-ignited, and compression stroke makes compressed-air actuated temperature enough high, can light the fuel spraying into, and high compression ratio makes motor integral body heavier.And the combustion process of diesel engine be take diffusive combustion as main, burning is also insufficient, has more carbon granule discharge, heavier to pollution of atmosphere.
Design a kind of light and handy, high efficiency, low pollution motor had great significance in the epoch of energy scarcity.
Summary of the invention
Low in order to overcome petrol engine efficiency, general seriously polluted of diesel engine heaviness and internal-combustion engine, the problem such as off-design efficiency is low, and noise and vibration is serious, the present invention proposes a kind of reciprocal heat accumulating type internal-combustion engine.
This reciprocal heat accumulating type internal-combustion engine comprises compression cylinder, connecting tube, heat retainer, firing chamber and expansion cylinder, and its structure outline is that compression cylinder relief opening was connected with expansion cylinder by connecting tube.The interface while that described connecting tube is connected with expansion cylinder is as suction port and the relief opening of expansion cylinder, the porting that is called expansion cylinder herein, when expansion cylinder piston moves to lower dead center, Working medium gas enters from described porting, when expansion cylinder piston is during to top dead center motion exhaust, Working medium gas flows out from described porting.Described heat retainer is the heat storage medium with porous channel, can carry out to the hot gas of flowing through in its porous channel heat absorption, the heat release of intermittent reciprocating.Heat retainer was directly placed in described connecting tube.In connecting tube between heat retainer and expansion cylinder, burner is set, and has corresponding fuel nozzle and spark plug.Can utilize in addition the cylinder cavity of expansion cylinder as firing chamber, and have corresponding fuel nozzle and spark plug.Described two kinds of firing chambers also can be arranged simultaneously.Described compression cylinder arranges intake valve, can suck gas working medium from the external world.On connecting tube between described compression cylinder and heat retainer, be provided with exhaust valve, discharge the working medium after burning expansion acting.
The basic functional principle of this reciprocal heat accumulating type internal-combustion engine is when compression cylinder piston moves downward from top dead center, now exhaust valve closing, intake valve on compression cylinder is opened, air sucks from the external world, when compression cylinder piston stroking upward, during pressurized air, IC Intake Valve Closes, air through overcompression flows out from the relief opening of compression cylinder, enters connecting pipe, flows into heat retainer.Air stream is through the porous channel while of heat retainer, with heat retainer generation heat exchange.Under nominal situation, regenerator temperature is than high from compression cylinder air out, and now heat retainer will show as compressed air temperature and rise to pressurized air transferring heat, and heat retainer self-temperature declines.The air flowing out from heat retainer enters firing chamber, becomes high-temperature fuel gas with nozzle fuel mix burning out, and high-temperature fuel gas enters by the porting of expansion cylinder.Expansion cylinder piston moves to lower dead center, and high-temperature fuel gas expands and does work.When expansion cylinder piston moves to top dead center, exhaust valve is opened, and the combustion gas after expanding is discharged from the porting of expansion cylinder, and oppositely through firing chamber, firing chamber now has stopped burner oil.Combustion gas and then again reverse flow are through heat retainer, and the temperature of now combustion gas is higher than the temperature of heat retainer medium.When gas flow is during through heat retainer porous channel, with heat retainer medium generation heat exchange, heat passes to heat retainer medium from combustion gas, shows as fuel gas temperature and reduces, and regenerator temperature raises.The combustion gas of oppositely flowing out from heat retainer is discharged into external environment from exhaust valve, has completed a power cycle.
The advantages such as the heat retainer medium of described heat retainer is generally porous ceramics, and metal corrugated plate and wire gaze etc., have regenerator temperature high, and accumulation of heat is effective, and price is lower.
Between heat retainer and connecting tube tube wall, place certain heat insulator, to reduce heat retainer heat transfer loss to external world.
Improvement project: be connected a cooler between compression cylinder outlet and heat retainer.When compression cylinder pressurized air, can produce more heat, can be cooling in time with cooler, reduce the compression work that compressor consumes, and can completely cut off the impact on compression cylinder of heat retainer that temperature is higher.
Adopt after heat retainer, improved the air temperature that enters firing chamber, reduced motor and discharged the temperature of combustion gas, so increased substantially the thermal efficiency of this reciprocal heat accumulating type internal-combustion engine.In addition,, when engine work, the air temperature that flows out heat retainer has reached the point of ignition of fuel, the fuel spraying into directly burns, and does not have deflagration phenomenon, and engine luggine and noise are little, and burning initial temperature is high, is beneficial to the perfect combustion of fuel, reduces and pollute.If can be by spark ignitor in the engine start stage.Motor is pressed smaller, and overall weight is light.Compression cylinder and expansion cylinder separately, make inflation process more abundant, have improved acting ability.
From overall structure, the apneustic moving element that waits of expansion cylinder part that this reciprocal accumulation of heat engine temperature is the highest, has reduced the restriction loss in gas flow process, has improved reliability of structure and working life, has also significantly reduced manufacture cost simultaneously.
The medium of the heat retainer that this reciprocal heat accumulating type internal-combustion engine adopts has very large specific surface area, can be at some catalyzer of carrier regenerator surface attachment, three-way catalyst such as the conventional vent gas treatment of general internal-combustion engine, when combustion gas is discharged through heat retainer from expansion cylinder, because the effect of catalyzer makes hydrocarbon, the contaminant concentration such as carbon monoxide and nitrogen oxide reduce greatly.
The present invention than the advantage of prior art is;
There are higher efficiency of thermal cycle and specific power; Non-detonating phenomenon, fuel tolerance is better; Simple in structure, good reliability; Because burning is complete, and facilitate built-in catalyzer, pollutant emission is reduced; Air pressure is smaller, and engine combustion is steady, makes vibration and noise little; The power adjustments of motor can directly be regulated by fuel straying quatity, has avoided the throttling loss of petrol engine closure.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of embodiment of the present invention.
Fig. 2 is the structure principle chart of improvement project of the present invention.
Fig. 3 be compression cylinder, expansion cylinder and connecting tube connection diagram.
Fig. 4 is gas flow direction schematic diagram in compression process.
Fig. 5 is gas flow direction schematic diagram in exhaust process.
In figure, serial number name is: 1, intake valve, 2, connecting tube, 3, exhaust valve, 4, compression cylinder, 5, compression cylinder piston, 6, heat retainer, 7, firing chamber, 8, fuel nozzle, 9, expansion cylinder piston, 10, expansion cylinder, 11 coolers.
Embodiment
Now by reference to the accompanying drawings, to be embodied as example, the present invention will be further described.
As shown in Figure 1, this reciprocal heat accumulating type internal-combustion engine mainly comprises compression cylinder 4, connecting tube 2, heat retainer 6, firing chamber 7 and expansion cylinder 10.The Placement of compression cylinder 4, connecting tube 2 and expansion cylinder as shown in Figure 3.Compression cylinder 4 relief openings with connecting tube 2 one end be connected, connecting tube 2 the other end with being connected of expansion cylinder 10.Connecting tube 2 is the porting of expansion cylinder 10 with the connection mouth of expansion cylinder 10, and the gas inlet and outlet of expansion cylinder 10 is all passed through this connection mouth.On compression cylinder 4, be provided with intake valve 1.Compression cylinder 4 relief openings were connected with connecting tube 2, and the other end of connecting tube 2 connects the porting of expansion cylinder 10.Connecting pipe 2, from close compression cylinder 4 one sides near expansion cylinder 10 1 sides, is disposed with exhaust valve 3, heat retainer 6, and firing chamber 7, comprises the fuel nozzle 8 on firing chamber 7.Heat retainer 6, for having the heat storage medium of porous channel, has intermittent heat absorption exothermic effects in thermodynamic cycle process.Heat retainer 6 is placed in the middle of the pipe of connecting pipe 2.
Working procedure is that compression cylinder piston 5 is descending, and intake valve 1 is opened, and exhaust valve 3 cuts out, and fresh air enters compression cylinder 4.When intake process finishes, intake valve 1 is closed, the up pressurized air of compression cylinder piston 5, pressurized air is discharged and is entered connecting tube 2 from compression cylinder, flow in the porous channel in heat retainer 2, with the medium generation heat exchange of heat retainer 2, air temperature raises again, the medium temperature of heat retainer 2 reduces, and the gas flow direction of compression process as shown in Figure 4.Pressurized air after heating enters firing chamber 7 again, fuel enters firing chamber by fuel nozzle 8 simultaneously, and air and fuel reaction burning become high-temperature fuel gas, and high-temperature fuel gas enters expansion cylinder 9 by the porting of expansion cylinder, expansion cylinder piston 9 is descending, and high-temperature fuel gas expands and does work.After acting process completes, expansion cylinder piston 9 is up, exhaust valve 3 is opened simultaneously, the higher combustion gas of temperature is flowed out by the porting of expansion cylinder 10, and oppositely, by firing chamber 7, now fuel nozzle 8 has cut out, combustion gas oppositely enters in the porous channel of heat retainer 6 again, the medium of heating heat retainer makes combustion gas self temperature cooling simultaneously, last combustion gas from exhaust valve 3 discharged to the external world.Exhaust process gas flow direction as shown in Figure 5.
The carrier regenerator surface of heat retainer 6 can attached catalyst, when combustion gas is discharged from expansion cylinder 10, in the time of cooling through heat retainer 6, because the effect of catalyzer makes unburnt hydrocarbon and the carbon monoxide in combustion gas, and the pollutant such as the nitrogen oxide producing in combustion process reduces, just by exhaust valve 3, discharge.
The straight line motion of compression cylinder piston 5 and expansion cylinder piston 9 can be converted into the output that rotatablely moves by connecting rod or the oblique disk structure of traditional combustion engine.The power adjustments of motor can be directly fuel metering straying quatity as required.
Improvement project: as Fig. 2, increase cooler 11, be used for cooled compressed cylinder 4 pressurized air out, the impact of the heat retainer 6 that isolated temperature is higher simultaneously on compression cylinder 4.
Claims (9)
1. a reciprocal heat accumulating type internal-combustion engine, it comprises compression cylinder (4), expansion cylinder (10), compression cylinder (4) is provided with intake valve (1), between the relief opening that it is characterized in that described compression cylinder (4) and expansion cylinder (10) by being communicated with connecting tube (2), the interface that expansion cylinder (10) was connected with described connecting tube (2) is as the porting of expansion cylinder, in described connecting tube (2), place the gas of flowing through is carried out to intermittent reciprocating heat absorption, the heat retainer with porous runner (6) of heat release, in connecting tube (2) between heat retainer (6) and expansion cylinder (10) and/or in expansion cylinder (10), firing chamber (7) is set, firing chamber (7) is provided with corresponding fuel nozzle (8) and spark plug, on the connecting tube (2) between heat retainer (6) and described compression cylinder (4), be provided with exhaust valve (3).
2. reciprocal heat accumulating type internal-combustion engine according to claim 1, is characterized in that the heat storage medium surface attachment of described heat retainer (6) reduces hydrocarbon, the catalyzer of carbon monoxide and nitrogen oxide.
3. reciprocal heat accumulating type internal-combustion engine according to claim 1, is characterized in that by heat insulation layer, being completely cut off between described heat retainer (6) and the tube wall of connecting tube (2).
4. according to the reciprocal heat accumulating type internal-combustion engine described in claim 1～3 any one, it is characterized in that connecting tube (2) and the interface of expansion cylinder (10) are the porting of described expansion cylinder (10), this interface is all passed through in the air inlet and the exhaust that are expansion cylinder (10), the runner of air inlet and exhaust process is identical, and airflow direction is contrary.
5. according to the reciprocal heat accumulating type internal-combustion engine described in claim 1～3 any one, it is characterized in that the power of this reciprocal heat accumulating type internal-combustion engine is controlled by the fuel quantity of fuel nozzle (8).
6. according to the reciprocal heat accumulating type internal-combustion engine described in claim 1～3 any one, it is characterized in that setting up cooler (11) at compression cylinder (4) relief opening, the outlet of cooler (11) connects pipe (2) again.
7. according to the reciprocal heat accumulating type internal-combustion engine described in claim 1～3 any one, it is characterized in that the straight line motion of compression cylinder piston (5) and expansion cylinder piston (9) is converted into by connecting rod or oblique disk structure the output that rotatablely moves.
8. reciprocal heat accumulating type internal-combustion engine according to claim 1, is characterized in that the heat storage medium of described heat retainer (6) is porous ceramics, wire gaze or corrugated sheet.
9. the working principle of a reciprocal heat accumulating type internal-combustion engine as claimed in claim 1, the working principle that it is characterized in that this reciprocal heat accumulating type internal-combustion engine is: compression cylinder piston (5) is descending, intake valve (1) is opened, exhaust valve (3) cuts out, air enters compression cylinder from the external world, when intake process finishes, intake valve (1) is closed, the up pressurized air of compression cylinder piston (5), pressurized air enters connecting pipe (2), then enter in the porous runner of heat retainer (6), heat retainer (6) is to pressurized air heat release, heat retainer (6) temperature declines, compressed air temperature raises, pressurized air enters firing chamber (7) again, fuel sprays into firing chamber (7) by fuel nozzle (8) simultaneously, air and fuel generation combustion reaction, high-temperature fuel gas enters expansion cylinder (10), expansion cylinder piston (9) is descending, high-temperature fuel gas expands and does work, after acting process completes, expansion cylinder piston (9) is up, exhaust valve (3) is opened simultaneously, the combustion gas of expanding after acting is flowed out from expansion cylinder (10), oppositely by firing chamber (7) and heat retainer (6), heating heat retainer (6), make combustion gas self temperature reduce simultaneously, finally by discharging in exhaust valve (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410155227.3A CN103993955A (en) | 2014-04-08 | 2014-04-08 | Reciprocating heat accumulating type internal combustion engine |
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| CN201410155227.3A CN103993955A (en) | 2014-04-08 | 2014-04-08 | Reciprocating heat accumulating type internal combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108748815A (en) * | 2018-08-21 | 2018-11-06 | 长春市三才科技发展有限公司 | Nylon tube heating in reciprocating mode molding machine |
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| JP2010077816A (en) * | 2008-09-24 | 2010-04-08 | Aritomi Okuno | Method for heating/cooling working gas |
| CN201560839U (en) * | 2009-08-25 | 2010-08-25 | 刘贺青 | Internal combustion stirling engine |
| JP2010285964A (en) * | 2009-06-15 | 2010-12-24 | Aritomi Okuno | Internal combustion stirling engine |
| CN102753806A (en) * | 2009-09-21 | 2012-10-24 | 思迪莱尔(简易有限公司) | Thermodynamic machine with stirling cycle |
| CN103089491A (en) * | 2011-10-27 | 2013-05-08 | 上海静迅电梯设备有限公司 | Micro-emission energy-saving engine master device recycling heat of tail gas by regenerative porous medium |
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2014
- 2014-04-08 CN CN201410155227.3A patent/CN103993955A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1219216A (en) * | 1996-04-15 | 1999-06-09 | 居伊·内格尔 | Internal combustion engine with constant-volume independent combustion chamber |
| JP2010077816A (en) * | 2008-09-24 | 2010-04-08 | Aritomi Okuno | Method for heating/cooling working gas |
| JP2010285964A (en) * | 2009-06-15 | 2010-12-24 | Aritomi Okuno | Internal combustion stirling engine |
| CN201560839U (en) * | 2009-08-25 | 2010-08-25 | 刘贺青 | Internal combustion stirling engine |
| CN102753806A (en) * | 2009-09-21 | 2012-10-24 | 思迪莱尔(简易有限公司) | Thermodynamic machine with stirling cycle |
| CN103089491A (en) * | 2011-10-27 | 2013-05-08 | 上海静迅电梯设备有限公司 | Micro-emission energy-saving engine master device recycling heat of tail gas by regenerative porous medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108748815A (en) * | 2018-08-21 | 2018-11-06 | 长春市三才科技发展有限公司 | Nylon tube heating in reciprocating mode molding machine |
| CN108748815B (en) * | 2018-08-21 | 2023-12-08 | 长春市三才科技发展有限公司 | Reciprocating heating forming machine for nylon tube |
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Application publication date: 20140820 |